Bathroom tile work leaves almost no room for error — every cut is visible at eye level. The most common mistake is using a dull or wrong-grit diamond blade for porcelain versus natural stone; porcelain needs a continuous-rim blade to prevent chipping, while natural stone tolerates a segmented rim better. Second is skipping a wet saw for small cuts around fixtures, which causes microfractures that show up as cracks weeks later. Third is not accounting for blade wear on large-format tile, where even a slightly worn blade wanders off-line on long cuts. Fourth is rushing curved cuts around drains without a proper hole saw or nibbling tool. Finally, many DIYers reuse a blade across porcelain, marble, and granite without matching bond hardness to material hardness, shortening blade life and cut quality. Investing in the right blade for the material — and swapping it out rather than forcing one blade to do everything — saves far more in wasted tile than it costs.
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